/**
 * Copyright (C) 2018-2020
 * All rights reserved, Designed By www.kaikeba.co

 */
package com.hzy.utils;

import org.apache.commons.lang3.time.DateFormatUtils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.time.*;
import java.util.Date;

/**
 * 时间工具类
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils {
    public static String YYYY = "yyyy";

    public static String YYYY_MM = "yyyy-MM";

    public static String YYYY_MM_DD = "yyyy-MM-dd";

    public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";

    private static String[] parsePatterns = {
            "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM",
            "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
            "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

    /**
     * 获取当前Date型日期
     *
     * @return Date() 当前日期
     */
    public static Date getNowDate() {
        return new Date();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     *
     * @return String
     */
    public static String getDate() {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static final String getTime() {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static final String dateTimeNow() {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static final String dateTimeNow(final String format) {
        return parseDateToStr(format, new Date());
    }

    public static final String dateTime(final Date date) {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static final String parseDateToStr(final String format, final Date date) {
        return new SimpleDateFormat(format).format(date);
    }

    public static final Date dateTime(final String format, final String ts) {
        try {
            return new SimpleDateFormat(format).parse(ts);
        } catch (ParseException e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static final String datePath() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static final String dateTime() {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str) {
        if (str == null) {
            return null;
        }
        try {
            return parseDate(str.toString(), parsePatterns);
        } catch (ParseException e) {
            return null;
        }
    }

    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate() {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算两个时间差
     */
    public static String getDatePoor(Date endDate, Date nowDate) {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }


    /**
     * Date转换为LocalDateTime
     * @param date
     */
    public static LocalDateTime date2LocalDateTime(Date date){
        Instant instant = date.toInstant();//An instantaneous point on the time-line.(时间线上的一个瞬时点。)
        ZoneId zoneId = ZoneId.systemDefault();//A time-zone ID, such as {@code Europe/Paris}.(时区)
        return instant.atZone(zoneId).toLocalDateTime();
    }

    /**
     * LocalDateTime转换为Date
     * @param localDateTime
     */
    public static Date localDateTime2Date( LocalDateTime localDateTime){
        ZoneId zoneId = ZoneId.systemDefault();
        ZonedDateTime zdt = localDateTime.atZone(zoneId);//Combines this date-time with a time-zone to create a  ZonedDateTime.
        return Date.from(zdt.toInstant());
    }

    public static LocalDate date2LocalDate(Date date) {
        if(null == date) {
            return null;
        }
        return date.toInstant().atZone(ZoneId.systemDefault()).toLocalDate();
    }

    public static Date localDate2Date(LocalDate localDate) {
        if(null == localDate) {
            return null;
        }
        ZonedDateTime zonedDateTime = localDate.atStartOfDay(ZoneId.systemDefault());
        return Date.from(zonedDateTime.toInstant());
    }


    /**
     * 获取时间
     * @param timeUnit 时间单位，0分钟，1小时，2天，3星期，4 月，5年
     * @param localVipTime 原时间
     * @param time 要增加的时间
     * @return
     */
    public static Date localDateTimeAdd(Integer timeUnit, LocalDateTime localVipTime, int time) {
        // 默认使用当前时间
        LocalDateTime localDateTime = LocalDateTime.now();
        switch (timeUnit){
            case 0:
                if (localVipTime == null || localVipTime.isBefore(LocalDateTime.now())) {
                    localDateTime = LocalDateTime.now().plusMinutes(time);
                } else {
                    //加上时间
                    localDateTime = localVipTime.plusMinutes(time);
                }
                break;
            case 1:
                if (localVipTime == null || localVipTime.isBefore(LocalDateTime.now())) {
                    localDateTime = LocalDateTime.now().plusHours(time);
                } else {
                    //加上时间
                    localDateTime = localVipTime.plusHours(time);
                }
                break;
            case 2:
                if (localVipTime == null || localVipTime.isBefore(LocalDateTime.now())) {
                    localDateTime = LocalDateTime.now().plusDays(time);
                } else {
                    //加上时间
                    localDateTime = localVipTime.plusDays(time);
                }
                break;
            case 3:
                if (localVipTime == null || localVipTime.isBefore(LocalDateTime.now())) {
                    localDateTime = LocalDateTime.now().plusWeeks(time);
                } else {
                    //加上时间
                    localDateTime = localVipTime.plusWeeks(time);
                }
                break;
            case 4:
                if (localVipTime == null || localVipTime.isBefore(LocalDateTime.now())) {
                    localDateTime = LocalDateTime.now().plusMonths(time);
                } else {
                    //加上时间
                    localDateTime = localVipTime.plusMonths(time);
                }
                break;
            case 5:
                if (localVipTime == null || localVipTime.isBefore(LocalDateTime.now())) {
                    localDateTime = LocalDateTime.now().plusYears(time);
                } else {
                    //加上时间
                    localDateTime = localVipTime.plusYears(time);
                }
                break;
        }

        return localDateTime2Date(localDateTime);
    }
}
